The vertical Vaporizer upgrade was for increased throughput utilizing manufacturer designed internals for greater thermal performance while reducing energy consumption.

All components contacting the process streams were fabricated from type 304 stainless steel.

The enlarged 7'-6" diameter upper section of the Vaporizer includes a pair of 36" diameter body flanges to access the internals and a full circumference platform for maintenance and installation of the internals once erected.

Approximately 10,000 labor hours were invested in the on-time completion of this ASME Section VIII, Division 2, vessel designed by our in-house engineering staff. It is a 117'-6" long x 12' diameter 2,000 barrel slug catcher with a shell thickness of 3.68" and weighing in at 644,000 pounds. Post Weld Heat Treat was done in one piece with our 120' long oven on site. Blasting and paint were also completed on site.

Compartment 1 includes a 5,000-gallon tank consisting of a dual hose suction pump, fuel management system and remote fill box for fleet fueling. The fleet fueling compartment includes a containment pan beneath the pump and fill box and a rainshield above. An explosion proof light is included, inside the rain shield, to supplement night time fueling. Piping consists of 1.5” threaded piping for the suction line and 2” threaded piping for the remote fill line. The suction line includes an anti-siphoning device and the fill line includes an overfill valve shutting off product delivery, to the tank, at 95% capacity.

Compartment 2 includes a 15,000-gallon tank with a 3” bulk loading and unloading pump system for used product consisting of diesel, gasoline, avgas, jet fuel and water mixture. The waste product is accumulated from various petroleum tanks for disposal, pumped into the 15,000-gallon compartment and allowed to separate fuel and water. Once separated, the fuel is removed via an integral flowing suction for use as a fuel for an incinerator. Contaminated water is removed for disposal thereby not requiring all the product to be incinerated. The pump, valves and piping are enclosed in a weather tight doghouse with roll up door. The doghouse includes 3”, 250 GPM load-in/load-out bulk pump, 3” flange and welded pipe, multiple 3” ball valves and solenoid valve, a 3” overfill valve for the fill and a 3” floating suction on the fuel removal line. The doghouse includes explosion proof electrical for power to the pump and solenoids along with an explosion proof light for night time deliveries.

Both compartments include pressure/vacuum vents for the primary tank venting along with emergency vents for both the primary tank and interstitial space. The tank compartments are monitored by an electronic tank monitor which wirelessly communicates to user’s network for web monitoring and email alarm indications. The tank monitor monitors both level indication for both compartments along with the interstitial area of the tank. The tank monitor is set to indicate an overfill possibility for either compartment at 90% setting off an audible & visual alarm at each end of the tank.

PRODUCT/PROJECT DESCRIPTION AND SPECIAL FEATURES:Above ground fuel storage tanks are available in many different sizes, and with numerous options and multi-compartment configurations. They can also be customized to the specific needs of the customer. All tanks are fabricated by CWB certified welders under an ISO quality system.

This project was a brand-new undertaking for our company. The primary challenge was to meet the specified operating condition and design constraints. Due to these design constraints and the product to be stored having a Specific Gravity (SG) higher than (1), these tanks were fabricated as Non-Code. However, the design parameters were followed to the ULC S601 standard for tank shells and venting capacity.

Five Single Wall Cube Tanks with installed in-line were fabricated for this project, 2x5000L (1230USG), 2x 4000L (1057USG) and 1x50/50 split compartment 4000L (1057USG) tanks, totaling 22000L (5811USG) . All these tanks were equipped with remote top fill, overfill valves, glass sight gages, and canstrut for pump mounting, and were piped to the side for convenient filling. The installed tanks also included stair accesses with handrails to roof access, which were fabricated from checker plate for anti-slip.

This system was fully assembled at the shop and then torn down to ensure a seamless assembly at customer site.

PRODUCT/PROJECT DESCRIPTION AND SPECIAL FEATURES:
Four shop fabricated 16'-6" diameter type 316L stainless steel steep silos were manufactured in our shop then transported to our customer site and erected by our field crew.

The steep silos were 16'-6" diameter with an overall height of 53'-6" with a cone top and bottom. They were designed and fabricated for +0.25 psig @ 200 degrees F. Silos weighed 58,500 lbs. each and contain 62,000 gallons each. They were manufactured in two sections, with structural supports because of the fact that the majority of the shell was only 1/4" thick, and then mated vertically.

These silos were constructed with a special cone separator on the bottom. There were custom lateral perforated strainers manufactured and attached to the inside of the cone.

The (4) silos were designed to sit with only 6" between the silos. The close proximity required us to engineer with proper reinforcement to reduce the movement of the silos due to potential seismic factors.